\begin{tabular}{lcc|cc}
\toprule
 & \multicolumn{2}{c|}{Good Employers} & \multicolumn{2}{c}{Bad Employers} \\\\
Year & D & \emph{p}-value & D & \emph{p}-value \\\\
\midrule
2010 & 0.0230 & 0.952 & 0.0281 & 0.593 \\\\
2011 & 0.0600 & 0.111 & 0.0306 & 0.583 \\\\
2012 & 0.0735 & 0.060 & 0.0357 & 0.463 \\\\
2013 & 0.0878 & 0.018 & 0.0491 & 0.231 \\\\
2014 & 0.1319 & 0.001 & 0.0658 & 0.047 \\\\
2015 & 0.1392 & 0.001 & 0.0985 & 0.003 \\\\
\bottomrule
\end{tabular}
